1. HeNe and visible diode laser;Cunningham;Lasers & Optronics,1988
2. Visible-wavelength diode lasers;Dreyfuss;Lasers & Optronics,1988
3. Characteristics of efficient laser diode collimators;Forkner,1983
4. Focusing elliptical laser beam;Marchant;Appl Opt,1984